Jack is commonly portrayed as Daniel "Danny" Fenton; A.K.A the human-ghost hybrid, "superhero", Danny Phantom. Due to them having two different shares of hair and eye color, able to fly, living in small towns, having a female sibling and having their lives turn upside down when they became "spirits". Brown hair and eyes for when he is Fenton/Overland and white hair and blue/green eyes for when he is Phantom/Frost. Burgess can serve as the town of Amity Park.

While being a winter spirit could also make him one of the ghosts that Danny comes across as Jack wonders out of the Ghost Zone, most likely as one of the friendlier one due to Jack being the protagonist of Rise of the Guardians.

Having a young, white haired nemesis, that he tries to bring him to his side, before he decides to "get rid of him", casts him as Vladimir "Vlad" Masters; A.K.A the "first" human-ghost, Vlad Plasmius. Kozmotis Pitchiner for when he is Masters and Pitch Black for when he is Plasmius. Pitch's Nightmares can serve as the ghosts that Danny fights and are loyal to Vlad.

Having a experience with a portal, labs, gadgets and juggling his school and superhero lives together, with the support of his friends, as well as having an older sibling that looks out for him when he can, easily casts Hiro as Danny Fenton/Phantom.